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<table width="100%" summary="page for Heating"><tr><td>Heating</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Heating System Choice in California Houses </h2>

<h3>Description</h3>

<p>a cross-section
</p>
<p><em>number of observations</em> :  900
</p>
<p><em>observation</em> :  households
</p>
<p><em>country</em> :  California
</p>


<h3>Usage</h3>

<pre>data(Heating)</pre>


<h3>Format</h3>

<p>A dataframe containing :
</p>

<dl>
<dt>idcase</dt><dd><p>id</p>
</dd>
<dt>depvar</dt><dd>
<p>heating system, one of <code>gc</code> (gas 
central), <code>gr</code> (gas room), <code>ec</code> 
(electric central), <code>er</code> (electric 
room), <code>hp</code> (heat pump)
</p>
</dd>
<dt>ic.z</dt><dd>
<p>installation cost for heating system z 
(defined for the 5 heating systems)
</p>
</dd>
<dt>oc.z</dt><dd>
<p>annual operating cost for heating system 
z (defined for the 5 heating systems)
</p>
</dd>
<dt>pb.z</dt><dd>
<p>ratio <code>oc.z/ic.z</code>
</p>
</dd>
<dt>income</dt><dd><p>annual income of the household</p>
</dd>
<dt>agehed</dt><dd><p>age of the household head</p>
</dd>
<dt>rooms</dt><dd><p>numbers of rooms in the house</p>
</dd>
</dl>



<h3>References</h3>

<p>Kenneth Train's home page :  <a href="https://eml.berkeley.edu/~train/">https://eml.berkeley.edu/~train/</a>.
</p>


<h3>See Also</h3>

<p><code>HC</code>, 
<code>Index.Source</code>, 
<code>Index.Economics</code>, 
<code>Index.Econometrics</code>, 
<code>Index.Observations</code></p>


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